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Solano County, CA Parking Rules: Commercial & Oversized Vehicles (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified June 2026

Key Facts

On-street residential commercial ban
State law (CVC 22507.5), needs posted signs
State weight threshold
10,000 lbs GVWR (CVC 22507.5)
Cottage industry large vehicles
Max 3 + 1 trailer each, enclosed only
Cottage industry hard cap
No vehicles over 26,000 lbs GVWR
Home occupation vehicles
One truck (1-ton max) + one trailer

Summary

Solano County has no general on-street ban targeting commercial trucks in residential areas; that area is governed by California Vehicle Code Section 22507.5. The County's zoning code instead limits commercial and 'large' vehicles tied to home-based businesses, capping heavy vehicles connected to cottage industries and home occupations.

City-specific rules exist: Fairfield, Vacaville, and Vallejo have their own commercial & oversized vehicles rules that differ from Solano County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

The use shall not generate traffic in excess of that normally associated with the residential use. Heavy commercial vehicles shall not be used in the home occupation for delivery of materials to or from the premises.

View official code

Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 1868, passed April 9, 2026).

Full Breakdown

5 lets local authorities, by ordinance and with posted signs or markings, restrict parking of commercial vehicles rated 10,000 pounds GVWR or more in residential districts, but exempts vehicles making pickups or deliveries to buildings on the affected street. 5-36) apply. Where the County does regulate commercial vehicles is in connection with home-based business activity on residential and rural parcels. Under the cottage-industry standards in Chapter 28, a maximum of three 'large vehicles' (defined by gross vehicle weight rating, generally 14,001 to 26,000 pounds) plus one trailer per large vehicle may be kept on the property, and such large vehicles may only be stored in an enclosed building; vehicles over 26,000 pounds GVWR may not be stored on a cottage-industry property at all.

For lighter home occupations, no more than one vehicle or truck of one-ton capacity plus one trailer is permitted, and heavy commercial vehicles may not be used for deliveries to or from the premises.

Violations & Fines

On-street commercial-vehicle violations are enforced under the California Vehicle Code. Storing commercial or 'large' vehicles on a residential parcel beyond the cottage-industry or home-occupation limits in Chapter 28 is a zoning violation subject to County code enforcement and abatement under the Zoning Ordinance.

Frequently Asked Questions

Can I park a commercial truck on the street in unincorporated Solano County?
There is no countywide unincorporated ordinance banning commercial trucks from residential streets. That restriction is a state-law option (California Vehicle Code Section 22507.5) that applies only where local authorities post signs or markings limiting commercial vehicles of 10,000 pounds GVWR or more. Absent posting, the main limit is the 72-hour continuous-parking rule. Vehicles delivering to a building on the street are exempt from any such posted restriction.
How many work trucks can I keep at my home business?
It depends on the use. For a cottage industry under Chapter 28, you may keep a maximum of three 'large vehicles' (generally 14,001 to 26,000 pounds GVWR) plus one trailer per large vehicle, and they must be stored inside an enclosed building; vehicles over 26,000 pounds are not allowed. For a smaller home occupation, no more than one truck of one-ton capacity plus one trailer is permitted, and heavy commercial vehicles cannot be used for deliveries.

Sources & Official References

Other rules in Solano County

All Solano County rules

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